Victaulic 5-Year Rebuild Kit Instructions Manual
REBUILD KIT INSTRUCTIONS
5-Year Rebuild Kit Instructions for
FireLock NXT
SERIES 768 AND 769
™
Valves
I-NXT.RBKIT
WARNING
Failure to follow instructions and warnings can cause product
failure, resulting in serious personal injury and property damage.
• Read and understand all instructions before attempting
to install, remove, adjust, or maintain any Victaulic piping
products.
• Depressurize and drain the piping system before attempting
to install, remove, adjust, or maintain any Victaulic piping
products.
• Wear safety glasses, hardhat, and foot protection.
If you need additional copies of any literature, or if you
have any questions concerning the safe use of this product,
contact Victaulic, P.O. Box 31, Easton, PA 18044-0031, USA,
Telephone: 1-800 PICK VIC, e-mail: pickvic@victaulic.com.
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2010 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
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WARNING
5-Year Rebuild Kit Instructions for
FireLock NXT
SERIES 768 AND 769
™
Valves
I-NXT.RBKITREBUILD KIT INSTRUCTIONS
TABLE OF CONTENTS
Hazard Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Contents of Rebuild Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Removing the System from Service . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Instructions for Replacing Internal Components of the Valve
(Items 1 - 10 on Page 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Instructions for Replacing the Diaphragm (Item 11 on Page 1). . . . . . . 9
HAZARD IDENTIFICATION
Definitions for identifying the various hazard levels are
provided below. When you see this symbol, be alert to the
possibility of personal injury. Carefully read and fully
u nderstand the message that follows.
WARNING
• The use of the word “WARNING” identifies the presence
of hazards or unsafe practices that could result in death or
serious personal injury if instructions, including recommended
precautions, are not followed.
CAUTION
• The use of the word “CAUTION” identifies possible hazards or
unsafe practices that could result in personal injury and product
or property damage if instructions, including recommended
precautions, are not followed.
NOTICE
• The use of the word “NOTICE” identifies special instructions
that are important but not related to hazards.
CONTENTS OF REBUILD KIT
11
6
5
Internal Components of the Valve
Item Qty. Description
1
2
3*
4
5
6
7
8
9
10
11
* Item #3 is not applicable for 1 ½ – 2-inch/48.3 – 60.3-mm valve sizes.
Clapper Seal
1
1
Seal Ring
Seal Washer
1
1
Bolt Seal
Clapper Shaft
1
Latch Shaf t
1
Clapper Spring
1
Latch Spring
1
Latch Spring Insertion Tool
2
Cover Plate Gasket
1
Diaphragm
1
9
8
9
4
7
10
1
2
3
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2010 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
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I-NXT.RBKIT_1
REBUILD KIT INSTRUCTIONS
5-Year Rebuild Kit Instructions for
FireLock NXT
SERIES 768 AND 769
REMOVING THE SYSTEM FROM SERVICE
™
Valves
WARNING
• Depressurize and drain the piping system
before attempting to remove the cover plate
from the valve.
Failure to follow this instruction could result
in serious personal injury and/or property
damage.
CAUTION
• Any activities that require taking the
valve out of service may eliminate the fire
protection provided.
• Before servicing or testing the system,
notify the authority having jurisdiction.
• Consideration of a fire patrol should be
given in the affected areas.
Failure to follow these instructions could
result in serious personal injury and/or
property damage.
I-NXT.RBKIT
3. Close the water supply main drain valve.
1. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the af fected area that the system is being
taken out of service.
2. Open the water supply main drain valve fully to flush the water
supply of any contaminants.
Water Supply Main
Control Valve
4. Close the water supply main control valve to take the system out of
service.
5. Open the water supply main drain valve.
6. Confirm that water is not flowing from the water supply main drain
valve.
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2010 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
I-NXT.RBKIT_2
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5-Year Rebuild Kit Instructions for
FireLock NXT
SERIES 768 AND 769
™
Valves
I-NXT.RBKITREBUILD KIT INSTRUCTIONS
7. Close the diaphragm-charge-line ball valve.
8. Open the system main drain valve to drain any water that has
accumulated and to release system air pressure.
NOTE: If the system has operated, open the remote system test valve
(inspector’s test connection) and any auxiliary drain valves.
9. Close the slow-fill ball valve on the Air Maintenance Trim Assembly
(AMTA).
10. PUSH DOWN ON THE AUTO DRAIN SCREW TO REMOVE
PRESSURE IN THE DIAPHRAGM CHARGE LINE.
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2010 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
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I-NXT.RBKIT_3
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